ThanX for the feedback !
I was struggling to find the sleeves and finally got the hint to look at L.A. Sleeves in USA.
http://www.lasleeve.com/
The “All-Purpose-Sleeve” FL-86 would be the right one to go for 86 mm bore as far as I have investigated.
A wonderful incident (miracle?) happened !
My phone rang a few days ago and a well experienced guy offered me a ready prepared, new big bore kit he has in stock as a replacement for his engine that uses the same kit !!!
It is working fine and he doesn’t need this kit at the moment.
Beed blasted cylinder, sleeves mounted and maschined for 86 mm bore incl. two matching pistons with bolts and rings.
Compression ratio will be around 9,3:1.
Bingo !
Awaiting the shipment beginning of next week.
I am a lucky and happy man 😉
Cheers, Michael
Here is a pic of that set:
